What Is Body-Identical Hormone Therapy (aka Bio-Identical Hormone Therapy)?
Body-identical hormone therapy (bio-identical hormone therapy) uses hormones that are structurally identical to those naturally produced by the human body. These hormones are typically derived from plant sources and are formulated to closely match endogenous estrogen and progesterone.
Because their molecular structure is the same as human hormones, the body is able to recognize, utilize, and metabolize them in a predictable way.
This differs from many synthetic hormones, such as those found in some birth control pills, hormonal IUDs, and certain conventional hormone therapies, which are structurally different from endogenous hormones and may carry different risk profiles.
Hormone Prescribing in Perimenopause and Menopause
As a licensed Naturopathic Doctor in Ontario, Dr. Lisa Weeks is authorized to prescribe body-identical hormone therapy — including estrogen and progesterone — for appropriate patients during perimenopause and menopause.
Hormone therapy is not a first-line approach for everyone. When indicated, it is used thoughtfully, at the lowest effective dose, and with appropriate monitoring.
When Body-Identical Hormone Therapy (Bio-Identical Hormone Therapy) May Be Considered
Dr. Lisa’s approach always begins with nutrition, lifestyle changes, stress regulation, and targeted supplementation to support hormone balance.
Body-identical hormone therapy may be considered when:
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Symptoms persist despite foundational support
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Hormonal changes are significantly impacting quality of life
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A patient is an appropriate candidate based on history, testing, and risk assessment
Common Signs of Hormonal Changes in Perimenopause and Menopause
Hormonal shifts during this life stage may be associated with symptoms such as:
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Changes in menstrual cycles (heavy, irregular, or skipped periods)
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PMS symptoms, including mood changes, anxiety, or sleep disruption
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Hot flashes or night sweats
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Brain fog or changes in concentration
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Insomnia or early morning waking
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Vaginal dryness or discomfort
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Changes in libido
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Shifts in energy, resilience, or stress tolerance
Symptoms vary widely, and not everyone experiences the same concerns.
What to Expect
Your care begins with a comprehensive intake appointment to review your health history, symptoms, lifestyle factors, and goals.
When hormone therapy is being considered, blood or urine hormone testing may be used to assess hormone patterns and support clinical decision-making.
Treatment plans are individualized and monitored over time. Follow-up appointments are used to reassess symptoms, review response, and adjust care as needed.